Antivibrating horn



March 30`, 1926. 1,578,869

w. H. THOMMEN ANTIVIBRATING HORN Filed Oct. 4, 1924 6' www Zy/amgmnmm @M4/Zw Patented Mar. 30, 1926.

entren ANTIWTBRTIIMG HORN.

.Application fledatoher 4, 19%. Serial 1110. 7g/1,683

To all fw 7mm t may conocen.'

Be it known that I, TWILLIAM H. @HGM- MnN, a. .citizen of the United States, and

resident of Blymouth, in the :county of Sheboygan and State -of lVisoonsin, have invented .certa-in 'new and useful impro-nef ments in Antiuibrati-ng Hic-rus; and l do heneby declare .that the following is 1a 55u11,

f clear, and :exact description thereof.

rlhis invention relates [to sound Aamplify ing horns.

@biects :of -this inventien are to provide a horn in which :the ,neck `pontien ,is formed from a wooden-i -blockfhaving ,-a throat therethrough, whereby solid walls :ane previded between which the sound travels, such solid :relatively heavy wal-ls effectively .elii natilng vibration. Y

Further objects of my invention are .to provide a novel method of manufacturing a wooden horn, particula-nly the neck portion, by forming a throat channel in a solid block of wood by sawing it longitudinally into partsremoving the innermost part and thereafter gluing` or fastening the parts together.

Further objects are to provide an am plifying horn which may be very cheaply formed from wood and may thus eliminate harsh tones appearing in other types of horns, such as those formed from metal, and which is so constructed that it may be most easily manufactured.

An embodiment of the invention is shown in the accompanying drawings, in which Figure 1 is a vertical longitudinal sectional view through the horn.

Figure 2 is a perspective view showing the neck portion in one stage of formation.

Figure 3 shows the neck portion in a further stage of formation.

Figure l is a plan view partly in section taken on the line M of Figure 1.

Figure 5 is a top plan view of the neck portion. l

In practising this invention, a longitudinal block of wood or fiber, such as shown in Figure 2, is sawed downwardly along divergent planes 1 and 2, to provide outer upwardly thickening wedge members orV sides 3 and d, and a central upwardly tapering or narrowing wedge portion A. This central wedge portion is removed temporarily from the side members 3 and 4, and is sawed along two diverging curving lines,

asindiicalted at and i6, to provide `a fron-t meirihea' 17 and@ near member `The imanerial included between these lines is 'removed and thus a dinergiin burning :s @amd channel is fonmed. l I i l.

lt is tto ,be noted from Figure .3 :that 1th@ trent :pont/ion .7 is ehenter than :the .-:rear perV tion and is provided with a rounded flower edge, as indicated at 9. The rear gpo-ntion underhangs entends below [the front por tion- L7 ,and is provided with ya icencawe ,pore tion 10 positioned below .the rounded lower endet the ,-iiront pont-ien 7 The .side `wedge like ,members .3 :and d :ane

then glued or otherwise secured to the non vengilrg plane ,faces of the front and maar members .7 and .8., Nrespestimaba, and ,thus la tiared `and curved sound channel 11 (.see Figures land ,is .provided infase'lid :heavy neck portion;A @his .neck pentium is fawnenvibr atin member Aand tl-ieentraneous so unds, notes and other disturbances produced in usual types of horns are wholly avoided by this construction, and a very pure and clear amplification of music or speech is given by this horn.

The top of the neck portion is equipped with a clamping apertured member 12which may be provided with a circular opening 13 to receive,-for example, the receiver neck of a wireless device -or the Atone arm of a phonograph. A slit 14 communicates with the aperture 13 and a screw 15 is employed to draw the member 12 into the desired intimate contact with the enclosed sound producing instrument. The bottom of the neck portion is secured to a board or other relatively short plate 16 which projects laterally beyond such neck portion and provides projecting feet which may be apertured at 17 (see Figure'e) to provide ready means of attaching the device to a suitable support.

The neck portion may be provided with an outwardly flaring attached horn having a relatively heavy bottom portion 1S and a lighter' upper portion 19 which may be slightly curved if desired. Preferably reinforcing cleats 20 are secured to the device at the junction of the outwardly extending portion with the neck portion, as illustrated in Figure 1, to secure greater mechanical strength.

1t will thus be seen that a novel form of amplifying'horn has been provided which is non-vibrating, and which will insure a clear amplification without distortion of the initial sound.

It will further be seen that a phonograph horn has been provided in which the neck portion thereof is Jformed from a solid block of material.

It will further be seen that a novel and simple method of making solid wall necks for amplifying horns from blocks o material such as wood or fiber has been pro vided, and it will be noted that this method may be very readily carried out in a simple and effective manner.

Although the invention has been described in considerable detail, it is to be understood that the invention may be variously embodied and is, therefore, to be limited only as claimed.

I claim:

' l. The method of making the neck portions o horns comprising cutting an elongated rectangular block longitudinally along diverging planes to provide a central wedge and two outer wedges, sawing the central wedge along two diverging, longitudinally extending lines to provide front and rear portions, removing the material enclosed between said lines, and securing the front and rear members between the side members.

2. The method of making the neck portions of horns comprising cutting an elongated rectangular block longitudinally along diverging planes to provide a central wedge and two outer wedges, sawing the central wedge along two diverging, longitudinally extending gradually outwardly curving lines to provide a front member having a rounded bottom portion and a rear member having a concaved portion spaced below said rounded portion, removing the material enclosed between said lines and securing the front and rear members between the side members.

3. A neck for a horn comprising a pair of sidemembers o'lf wedge shape with their thickest edges towards the throat of the horn and a pair of intermediate wedgeshaped members positioned between said side members with their thinnest portions towards the throat of the horn, said intermediate member being cut away on divergent lines to provide a gradual increasing space therebetween, one of said intermediate members being longer than the other and underhanging the lowest edge of `the other of said intermediate members. v

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of Tisconsin.

WILLIAM H. TI-IOMMEN. 

